WD 72TB My Cloud PR4100 4-bay NAS - Network Attached Storage Media Server with Transcoding, with quad-core processor, 4GB DDR3L RAM and WD Red drives : Amazon.co.uk: Computers & Accessories
TerraMaster F8-422 10GbE NAS 8-Bay Network Storage Server Quad-core CPU with Hardware Encryption (Diskless) : Amazon.co.uk: Computers & Accessories
Synology Disk Station DS2422+ - NAS server - 12 bays - SATA 3Gb/s - RAID 0, 1, 5, 6, 10, JBOD - RAM 4 GB - Gigabit Ethernet - iSCSI support : Amazon.co.uk: Computers & Accessories